Why Nikkei 225 (JP225) fell 1.20%

Nikkei 225 (JP225) fell 1.20% on August 21, 2026 — BoJ September hike odds lift yen pressure.

What happened

Japan's July core CPI came in at 1.8% year-over-year, meeting expectations and keeping inflation sticky enough to sustain Bank of Japan rate-hike expectations for September.

Why it moved

Persistent inflation narrows the BOJ's flexibility and pushes forward a tighter monetary policy cycle; higher rates cheapen future earnings and reduce the yield-boost Japanese equities have enjoyed from loose policy,…

Why it matters

Within the Japan (Yen & Equities) theme, this inflation print is cementing a structural pivot from easy money to policy normalization, unwinding the historic carry-trade and yen-weakness tailwinds that have supported…

What would break the thesis

If BOJ officials signal hesitation or September's inflation data rolls over sharply, the market may reprice rate expectations lower and reverse equity losses; a sustained yen spike also threatens to strangle export…

Sources

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